Alert archive / Illinois / Flash Flood Warnings in 2002

Flash Flood Warning 25, NWS Lincoln, IL

May 6, 2002Morgan County, Sangamon County, Scott County, Illinois

NWS Lincoln, IL issued this flash flood warning at May 6, 2002, 9:17 AM CDT for Morgan County, Sangamon County, Scott County, Illinois. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 6, 2002, 9:17 AM CDT (14:17 UTC)
Expired: May 6, 2002, 3:00 PM CDT
In force: 6 hr
Issued by: NWS Lincoln, IL
Area: Counties, with a storm outline in the text

Counties Morgan County, IL, Sangamon County, IL, Scott County, IL

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 2.3 hours before the alert went out and 109 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1 J/kg
Mixed-layer CIN: -102 J/kg
Mixed-layer LCL: 445 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 346 m²/s²
0-3 km storm-relative helicity: 454 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS53 KILX 061417
FFWSPI
ILC137-167-171-062000-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
917 AM CDT MON MAY 6 2002

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SANGAMON COUNTY IN CENTRAL ILLINOIS
  SCOTT COUNTY IN WEST CENTRAL ILLINOIS
  MORGAN COUNTY IN WEST CENTRAL ILLINOIS

* UNTIL 300 PM CDT

* AT 917 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  VERY HEAVY RAIN HAS FALLEN ACROSS CENTRAL SCOTT COUNTY. RADAR 
  ESTIMATES THAT UP TO 2 INCHES HAS FALLEN IN SCOTT COUNTY OVER A 
  ONE HOUR TIME. THUNDERSTORMS WITH ADDITIONAL HEAVY RAIN ARE 
  EXPECTED TO TRACK OVER THE SAME LOCATION...WITH AN ADDITIONAL 2 
  INCHES POSSIBLE THROUGH LATE MORNING. THIS HEAVY RAIN WILL TRACK 
  EAST INTO MORGAN AND SANGAMON COUNTY LATE THIS MORNING...WITH 
  FLASH FLOODING LIKELY.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. 
IF IN A FLOOD PRONE AREA...MOVE TO HIGHER GROUND IMMEDIATELY. 
RESIDENTS LIVING ALONG CREEKS AND STREAMS ARE ESPECIALLY VULNERABLE 
TO THE EFFECTS OF FLASH FLOODING. DO NOT ATTEMPT TO CROSS FLOODED 
AREAS BY FOOT OR AUTOMOBILE.

REPORT FLASH FLOODING TO YOUR LOCAL ESDA...OR THE NEAREST LAW
ENFORCEMENT AGENCY...FOR RELAY TO THE NATIONAL WEATHER SERVICE. STAY
TUNED FOR LATER STATEMENTS.

LAT...LON 3988 8923 3970 8947 3953 8959 3954 9057
          3987 9058 3986 8998 3997 8958

PLAHMER
NNNN

The office that day

Everything else NWS Lincoln, IL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 6, 5:11 AM CDT	Flash Flood Warning	ILX	Shelby	4 hr
May 6, 7:18 AM CDT	Flash Flood Warning	ILX	Coles	4 hr
May 6, 9:18 AM CDT	Severe Thunderstorm Warning	ILX	Scott	42 min
May 6, 10:12 AM CDT	Flash Flood Warning	ILX	Christian, Shelby	6 hr
May 6, 11:22 AM CDT	Flash Flood Warning	ILX	Crawford, Effingham, Jasper	6 hr
May 6, 2:41 PM CDT	Flash Flood Warning	ILX	Clay, Lawrence, Richland	6 hr

Nearby

Flash Flood Warnings in Illinois, 2002 Every flash flood warning in 2002

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.